Permutation-lock



(No Model.) 1

- W. W. PU-RSELL.

PERMUTATION LOCK.

No. 457,959. Patented Aug. 19, 1891.

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UNITED STATES PATENT OFFICE.l

VILLIAM V. PURSELL, OF BERVVICK, PENNSYLVANIA.

PERM UTATION-LOCK.

SPECIFICATION forming part of Letters Patent No. 457,959, dated August 18, 1891I Application filed November 13, 1890.

T0 all whom it may concern.-

Beit known that I, WILLIAM W. PURsELL, a citizen of the United States, residing at Berwick, in the county of Columbia and State of Pennsylvania, haveinvented certain new and useful Improvements in Hasp-Locks; and Ido hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to hasp-locks, and has for its object to dispense with a key and provide a lock that will be compact, efficient, simple, water and dust proof, and practically impossible to be picked.

The improvement consists of the novel features and thepeculiar construction and combination of the parts, which will be hereinafter more fully described and claimed, and which are shown in the annexed drawings, in which- Figure 1 is a top plan View of a lock embodying my invention. Fig. 2 is a central longitudinal section of the lock. Fig. 3 is a detail View of the inner end of the stein and tumblers. Fig. 4 is a section through one of the wards, showing the manner of connecting the same with the tumbler-shaft. Fig. 5 is a cross-section through the stem and the tumblers. Fig. 6 is an end View of the locking-cap, looking at the open end. Fig. 7 is a side view of the lock, showingone method for connecting the cap and the stem, the said means also serving to fasten the hasp on the staple. Fig. Sis a perspective view of the inner end of the tubular stem.

The stem A is tubular and terminates at its outer end in the annular enlargement or ring ct, and is provided near its inner end with the annular groove d and the notch c2, which extends from said groove to the end of the stem. Within the stem are arranged the series of tumblers B, D, and E, which are concentrically journaled, and which have, respectively, at their outer ends the rings b, d, and e, and at their inner ends the wards b', d', and e. The wards are of the same diameter and equal in size with the diameter of the stem A, and have notches b2, d2, and e2, which correspond with the notch t2 in the stem. The rings b, d, and e have characters im- Serial No. 371,337. (No model.)

proper relation effect a'n -aligning of the notches a2, b2, d2, and c2, as shown in Fig. 3.

The stem and the tumbler-shafts are of different relative lengths to permit the wards and the rings to occupy different positions and allow the proper spacing of the wards, the spaces between the wards being equal to the width of the groove a', the wards are held on the tumbler-shafts bybinding-screws ,0, whereby provision is had to change the relative position of any or all of the wards, so as to alter the combination at which the lock opens. The locking-cap F is adapted to be fitted on the end of the stem and has aseries of projections f on its inner side, which, when the cap is in place on the stem, enter the spaces between ,the wards and lock the cap on the stem.

wIn practice the stem is thrust through a staple after the hasp has been turned down on the said staple, the notches being in alignment andthe cap is placed over the stem, the projections passing through the notches, and the rings are turned to throw the notches out of alignment and lock the cap. To remove the cap the rings are turned until the characters thereon 4are brought into proper relation, and the predetermined combination of characters are brought in line with an indicating-mark on the cap, when the latter can be removed.

Inthe preferred form of the invention the locking-cap is secured to one end of a lever, as G, and the stem-A is fastened to the corresponding end of a similar lever, as H. These levers G and H cross and are pivoted together, and their inner ends are approximately semicircular, forming a ring when together. Then the cap and the stern are together, the inner ends of the levers are closed, and when thrust through a staple, as shown, lock the hasp. When the cap and stem are separated, the inner ends ofthe levers are separated and the lock can be detached from the staple. Obviously the levers may be used with simllar locks comprising a stem and a locking-cap.

Vhile the drawings and foregoing specification relate to hasp-locks only, by immaterial alterations in the shape of the lock it is also designed as a lock for doors, chests,

printed thereon, which when brought into and drawers.

IOO

Having thus described my invention, what I claim, and desire to secure by Letters Patent, is-f,-

l. The hereinbefore-speciied hasp Jock, composed of thetubnlar stem A, having the annular enlargement ay at its outer end, and having the annular groove a and the communicating notch a2 at its inner end, a series of tnmblers of varyin g lengths concentrically j onrnaled relatively to each other and the tubular stern, and having rings at their outer ends, wards at the inner ends of the tumblers and properly spaced, and of the saine diameter as the inner end of the tubular stein, and having notches which correspond with the notch a2, fastenings to adj ustably connect the Wards with the tuniblers, and the locking-cap provided on its inner side with projections which correspond in position with the groove a, and with the spaces between the wards, substantially as set forth.

2. The combination,withastem, a cap, and means for locking the cap on the stem,of two levers crossed and pivoted between their ends and carrying the cap and the stem on their respective ends, and having their inner ends constructed to form a ring and engage with a staple when the cap and the stem are closed, substantially as specified.

In testimony whereof l aix my sgnatu re in presence of two Witnesses.

WILLlAM NV. PURSELL. 'Witnesses R. G. CRIsPIN, XV. E. SMITH. 

